Table 1

Summary of the variables included in the analysis, and differences between individuals reporting chronic whiplash and individuals not reporting chronic whiplash
Covariates Chronic whiplash N = 403 No chronic whiplash N = 13,583 P-value (Chi-square test) All N = 13,986
Female 58.3% 53.9% 0.079 54.0%
Anxiety 24.1% 17.6% 0.001 17.8%
Depression 14.6% 9.6% 0.001 9.8%
Sleep quality <0.001
 Good 37.0% 42.6% 42.4%
 Bad 17.9% 11.1% 11.4%
 Not asked 45.2% 46.3% 46.3%
Education 0.119
 Compulsory only 13.7% 17.5% 17.4%
 High School 46.9% 45.7% 45.7%
 University 39.5% 36.8% 36.9%
Benefit recipiency 28.3% 13.0% <0.001 13.4%
 Sickness benefit 10.9% 4.6% 4.7%
 Occupational habilitation 3.5% 1.1% 1.1%
 Disability pension 11.9% 3.3% 3.6%
 Social benefit 1.5% 0.5% 0.6%
 Unemployment benefit 2.5% 1.6% 1.7%
 Dependents’ pension 0.5% 0.7% 0.7%
 Other 2.7% 2.6% 2.6%
Physical activity 0.369
 None 17.4% 15.5% 15.6%
 Easy 38.7% 41.9% 41.8%
 Heavy 43.9% 42.5% 42.6%
Alcohol consumption 0.838
 No consumption 27.1% 28.3% 28.3%
 Moderate consumption 67.5% 66.1% 66.1%
 Heavy consumption 5.5% 5.6% 5.6%
Daily smoking 37.5% 35.5% 0.416 35.6%
Somatic diagnoses >0 11.9% 8.1% 0.006 8.2%
Marital status 0.090
 Not married 11.2% 12.7% 12.6%
 Married 71.5% 74.6% 74.5%
 Separated 3.0% 2.4% 2.4%
 Divorced 13.7% 9.7% 9.8%
 Widow/Widower 0.7% 0.7% 0.7%
Mean somatisation >2 43.2% 21.4% <0.001 22.1%

Myrtveit et al.

Myrtveit et al. BMC Psychiatry 2012 12:129   doi:10.1186/1471-244X-12-129

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